Julia, Lady Clements OBE (11 April 1906 – 1 November 2010) was an English flower arranger and lecturer on floral arranging whose career spanned over sixty years. She wrote some 20 bestselling books on the subject of flower arranging, as well as contributing to a variety of publications on gardening. For 12 years, she wrote a column for Popular Gardening.

Clements was married to the late Alexander Hay Seton, 10th Baronet of Abercorn (1904–1963).

Clements celebrated her 104th birthday in 2010 and remained active in floral art and horticulture until the end of her life.